Jeff Winkler
Vice President, Engineering & Service Management at Cyber Engineering Services, Inc. (CyberESI)
Lewisville, Texas, United States
Summary
👤
Senior🎓
Top SchoolJeff Winkler is a cybersecurity and IT executive with over a decade of experience transforming strategic visions into secure, efficient, and scalable operations across commercial and defense sectors. As Vice President of Engineering & Service Management, he leads cross-functional teams to improve effectiveness and quality across multiple companies and non-profit initiatives, drawing on a history of delivering multimillion-dollar cost savings and measurable risk reductions. His hands-on background ranges from SATCOM field engineering in the US Army to leading IT and security programs at Globecomm and Speedcast, where he eliminated redundancies and cut over $400K in operating costs. A pragmatic performance engineer as well, he has contributed backend optimizations to the popular Flow blockchain implementation, reducing CPU bottlenecks and memory allocations—illustrating a rare blend of executive leadership and low-level systems troubleshooting. Known for fostering collaborative, adaptable teams, he pairs governance and technical depth to align technology with business outcomes.
10 years of coding experience
20 years of employment as a software developer
Leadership Development Program (LDP), Marketing/Marketing Management, General, Leadership Development Program (LDP), Marketing/Marketing Management, General at University of Maryland University College
Github Skills (12)
golang10
go10
ledger10
performance-optimization10
pool10
blockchain10
implement10
testing9
data-structure9
algorithm9
data-structures9
algorithms9
Programming languages (5)
Github contributions (5)
onflow/flow-go
Jul 2021 - Mar 2022
A fast, secure, and developer-friendly blockchain built to support the next generation of games, apps, and the digital assets that power them.
Role in this project:
Back-end Developer & Performance Engineer
Back-end Developer & Performance EngineerContributions:83 reviews, 70 commits, 26 PRs in 8 months
Contributions summary:Jeff primarily focused on improving the performance of the `flow-go` blockchain implementation. Their contributions involved optimizing the mempool logic, specifically addressing CPU saturation issues related to eject operations by implementing alternative random ejection strategies and eliminating linear search operations. The user also worked on improving the performance of the ledger, specifically improving the String() and CanonicalForm methods to avoid unnecessary memory allocations. In addition to these performance improvements, the user also made adjustments to tests to handle race conditions.
golangnext-generationsecuregamesblockchain-platform
jwinkler2083233/iqpuzzle
Feb 2020 - Jul 2021
Contributions:3 pushes, 1 branch in 1 year 5 months
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